Guitar Music from 1780-1926
The earliest items from the collection are for 5-course or 5-string guitar from the 1780s. The bulk of the collection contains music for the 6-string guitar from the 19th century. A few sample items are featured here, including the very important manuscript of the Regondi Dix Etudes and LHoyer's guitar concerto Op. 16:

Introduction et variatione sur le choeur d'introduction de Norma (Op. 41)
Bobrowicz, Jan Nepomucen (1805-1881)

Schule für Guitarre oder Laute: für den Selbstunterricht geeignet nebst Tabelle für Bass Guitarre und Schwedische Laute = Self instructor for the guitar
Decker-Schenk, Johann (1826-1899)

Gran Variazioni per chitarra sola, sopra la Cavatina favorita: Di tanti palpiti: dell' Opera Tancredi (Op. 104)
Diabelli, Anton (1781-1858)

Dosugi Iv. Klingera dli︠a︡ shesti-strunnoĭ gitary
Klinger, Ivan Andreevich (approximately 1815-1897)

Pi︠es︡nʹ siroty izʺ opery "Zhiznʹ za T︠Sa︡ri︠a︡" Glinki; Ėlegii︠a︡ G. Fogeli︠a︡
Klinger, Ivan Andreevich (approximately 1815-1897)

9 Variazionen über das Volkslied: Gott erhalte Franz den Kaiser (Op. 7)
Matiegka, Wenzel (1773-1830)